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United States Patent | 5,651,637 |
Lowe | July 29, 1997 |
An asphaltic roadway base or sub base which includes a by-product of petroleum refining units utilizing a Residuum Oil Supercritical Extraction (ROSE) process. The base course is a designed mixture of a resin-asphaltene residuum and aggregate, wherein the resin-asphaltene residuum has a penetration less than 10 at 77.degree. F. and a softening point above 150.degree. F., the resin-asphaltene residuum is present in the range of 3% to 12%, by weight of the composition, and the aggregate is present in the range of 88% to 97%, by weight of the composition.
Inventors: | Lowe; George E. (LaPlace, LA) |
Assignee: | Marathon Oil Company (Findlay, OH) |
Appl. No.: | 418033 |
Filed: | April 6, 1995 |
Current U.S. Class: | 404/17; 106/273.1; 106/277; 404/27 |
Intern'l Class: | C08L 095/00 |
Field of Search: | 404/17,27,31,81,82 52/DIG. 9 106/276,277,273.1,281.1,284.04 427/138 |
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2402597 | Jun., 1946 | Bourcher | 404/27. |
3923537 | Dec., 1975 | Wood | 106/8. |
4073659 | Feb., 1978 | Burris | 106/277. |
4170484 | Oct., 1979 | Crawford et al. | 106/281. |
4268318 | May., 1981 | Stone | 106/277. |
4437896 | Mar., 1984 | Partanen | 106/273. |
4621108 | Nov., 1986 | Burris | 523/340. |
4683005 | Jul., 1987 | Poirier | 106/273. |
4708516 | Nov., 1987 | Miller | 404/31. |
4777064 | Oct., 1988 | Stone | 427/138. |
4851260 | Jul., 1989 | Stone | 427/138. |
4904305 | Feb., 1990 | Zanzotto et al. | 106/284. |
Foreign Patent Documents | |||
408318 | Nov., 1970 | AU | 106/284. |